预应力锚索肋板在高边坡防护工程中的应用

Application of Prestressed Anchor Cable Rib Plate in High Slope Protection Project

山区高速公路初建时期由于施工开挖、工程爆破、防护不到位或者高边坡防护措施不合理,后期易受到雨水冲刷发生浅层山体滑塌,严重威胁高速公路行车安全。文章针对某高速公路路堑高边坡发生浅层山体滑坡的实际,在边坡施工条件受限情况下,选择有效边坡加固防护方案,先对边坡进行稳定性分析确定设计施工参数,然后对该段高边坡施工安装预应力锚索和浇筑肋板墙加固处治,有效提高了坡体的稳定性。目前边坡浅层表面未出现继续滑塌现象,坡面裂缝未有明显变化,达到了加固防护目的。

Due to construction excavation,engineering blasting,inadequate protection,or unreasonable high slope protection in the initial construction period of the expressway in the mountainous area,the shallow mountain may be collapsed by the rain wash in the later stage,which seriously threatened the traffic safety of expressway.According to the actual situation of a shallow landslide occurring in a high cutting slope of a certain expressway,when the slope construction conditions are restricted,the slope reinforcement and protection scheme should be selected to effectively improve the slope stability.Firstly,the slope stability analysis should be carried out to determine the design and construction parameters.Then this section of high slope construction was installed with prestressed anchor cables and reinforced with pouring ribbed walls.The results show that stability of the slope has been effectively improved.At present,the shallow surface of the slope has not continued to collapse,and the cracks on the slope have not changed significantly,and the purpose of reinforcement and protection is achieved.